27770649834 has 64 divisors (see below), whose sum is σ = 60020932608. Its totient is φ = 8540822400.

The previous prime is 27770649821. The next prime is 27770649839. The reversal of 27770649834 is 43894607772.

It is not an unprimeable number, because it can be changed into a prime (27770649839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1320022 + ... + 1340894.

It is an arithmetic number, because the mean of its divisors is an integer number (937827072).

Almost surely, 2^27770649834 is an apocalyptic number.

27770649834 is an abundant number, since it is smaller than the sum of its proper divisors (32250282774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27770649834 is a wasteful number, since it uses less digits than its factorization.

27770649834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21243.

The product of its (nonzero) digits is 14224896, while the sum is 57.

The spelling of 27770649834 in words is "twenty-seven billion, seven hundred seventy million, six hundred forty-nine thousand, eight hundred thirty-four".